Error Handling

I'm learning after a Apple iOS App Tutorial and the compiler sends back a lot of errors. How should I start learning how to handle these errors in Swift programming language only ?
Probably the Apple iOS App Tutorial is not for the same version than your Xcode.
Which version of Xcode do you use ?
Which tutorial is it, which version ?

Could you give a few examples :
  • the code

  • the error you receive

so that we can explain how to handle errors.
Error Handling
 
 
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